Definitions

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Aesthetascs

See: Esthetasc [Martin, 2005]
A long, tubular, sensory seta having thin cuticle, found on the antennula or antenna. Aesthetascs may have a chemosensory function, because males generally have more of these structures than females. [Wilson, 1989]
Sensory seta covered by delicate cuticle, often projecting from antenna or antennule.
(syn. olfactory hair, esthetasc, esthete...) [McLaughlin, 1980]
Simple, tubular, thin-walled, chemosensory seta often found on the antennular flagellum. [Holdich and Jones, 1983]
Spinelike cuticular processes often occurring in clumps or rows and functioning in chemoreception, usually located on the antennules. [Brusca and Brusca, 2002]
(Taxon-specific: Order Cladocera) One in a tuft of sensory projections at tip of each antennule.
(syn. esthete, olfactory seta) [Stachowitsch, 1992]
(Taxon-specific: Class Cephalocarida) Elongate sensory projection at tip of each antennule.
(syn. esthete) [Stachowitsch, 1992]
(Taxon-specific: Order Cumacea) One in a series of sensory projections on main flagellum of antennule. [Stachowitsch, 1992]
(Taxon-specific: Order Tanaidacea) One in a series of sensory projections on flagella of antennules. [Stachowitsch, 1992]
(Taxon-specific: Order Decapoda) One in a series of small sensory projections on outer flagellum of antennule.
(syn. esthetasc, esthete, olfactory hair) [Stachowitsch, 1992]
(Taxon-specific: Order Amphipoda) One in a series of thin-walled sensory projections on antennule.
See: Calceolus [Stachowitsch, 1992]
(Taxon-specific: Order Isopoda) One in a series of sensory projections on antennules. (uniramous, biramous, triramous). [Stachowitsch, 1992]
Nomenclature of isopod cephalon (A). Examples of isopod mouth appendages: Idoteidae (B, C, F, H); Cirolanidae (D, E, G, I). [Wetzer et al. 1997]
(Taxon-specific: Order Isopoda) Thin-walled chemosensory seta usually found on antennular flagellum. [Wetzer et al. 1997]
(Taxon-specific: Order Isopoda) Thin-walled sensory seta usually on flagellum of antennule. [Kensley and Schotte, 1989]
(Taxon-specific: Order Leptostraca) One in a series of sensory projections on antennules and ocasionally also on antennae. [Stachowitsch, 1992]
(Taxon-specific: Subclass Copepoda) A thin-walled, sensory element with putative chemoreceptive function, found on the antennules. [Boxshall and Halsey, 2004]
(Taxon-specific: Subclass Copepoda) A transformed seta of antenna 1 or another oral appendage of copepodids. An aesthetasc usually has a sclerotized base but otherwise is poorly sclerotized; it often is considered to have a chemosensory function. [Ferrari and Dahms, in press]
(Taxon-specific: Subclass Copepoda) One in a series of small sensory projections along antennule.
(syn. esthetasc, esthete) [Stachowitsch, 1992]
(Taxon-specific: Subclass Mystacocarida) Small sensory projection at tip of each antennule.
(syn. aesthete) [Stachowitsch, 1992]
(Taxon-specific: Class Ostracoda) One in a series of small sensory projections along antennule or antenna; considered to be modified setae. [Stachowitsch, 1992]
(Taxon-specific: Class Remipedia) One of numerous robust, long sensory projections aggregated in several dense rows at base of antennules (on pad on first article of peduncle); directed posteriorly and partially covering antennae.
(syn. esthetasc, esthete, olfactory hair) [Stachowitsch, 1992]
(Taxon-specific: Order Thermosbaenacea) One of several senory projections on larger of two flagellaf antennule. [Stachowitsch, 1992]
(Taxon-specific: Order Euphausiacea) One in a series of small sensory projections on each antennule. [Stachowitsch, 1992]